MCQ
Four students measure the height of a tower. Each student uses a different method and each measures the height many different times. The data for each are plotted below. The measurement with highest precision is
- ✓$I$
- B$II$
- C$III$
- D$IV$
✓
Answer
Correct option: A.
$I$
a
(a)
(a)
Precision refers to the limit of resolution. Precision is determined by the least count of measuring instrument.
A smaller least count means greater precision.
So, more precise readings have least spread of readings as in case $I$.
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